Feature suggestion about maximizing window on pc

While writing this I noticed it's pretty small and insignificant thing, but I'll suggest it anyways.

So on pc, the icon for maximizing is just a box, like most other programs. But then when you have discord maximized the icon stays the same, unlike how it becomes 2 squares lying on top of each other. This confuses me if the program is actually maximized or if it's a little bit off. This is not a big issue, and it might just be something affecting me, but I'll post anyways.